diff --git a/README.md b/README.md
index d349490..9adc157 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,8 @@ bun run your-app-entrypoint.js
 
 ## changelog
 
+- **Version 1.2.0**
+  - modified `frontend/index.js` such that script can now be used in SharedWorker and HTTPS contexts
 - **Version 1.1.0**
   - added `func_register_teardown`, made `jsbuild_app_frontend` optional
 - **Version 1.0.1**
diff --git a/frontend/index.js b/frontend/index.js
index 57481fc..e52ebbc 100644
--- a/frontend/index.js
+++ b/frontend/index.js
@@ -33,8 +33,11 @@ class FramerockUtils {
 	_setup_transport ({ on_open, on_close, on_message, on_error }) {
 		
 		console.debug('SETUP TRANSPORT')
+
+		const ctx_location = window ? window.location : self.location
+		const ws_protocol = ctx_location.protocol === 'http:' ? 'ws:' : 'wss:'
 		
-		this._ws = new WebSocket(`ws://${window.location.host}/ws`)
+		this._ws = new WebSocket(`${ws_protocol}//${ctx_location.host}/ws`)
 		const ws = this._ws
 		ws.binaryType = 'arraybuffer'
 		
diff --git a/package.json b/package.json
index 174ddbe..0fce878 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "framerock",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "type": "module",
   "main": "backend/index.js"
 }